/Engine/Source/Developer/TextureCompressor/Public/TextureCompressorModule.h
Generates angularly filtered mips.
static void GenerateAngularFilteredMips ( [TArray](API\Runtime\Core\Containers\TArray)< [FImage](API\Runtime\ImageCore\FImage) > & InOutMipChain, int32 NumMips, uint32 DiffuseConvolveMipLevel )